Mitsubishi Lancer Evolution IX. Manual - part 117
DIAGNOSTIC TROUBLE CODE PROCEDURES
SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR
54B-31
DIAGNOSIS CODE SET CONDITIONS
If the voltage in the signal line between the
SRS-ECU and the ETACS-ECU has exceeded 4.6 V
for 40 milliseconds or more, the ETACS-ECU will set
diagnosis code No.31 as an open circuit. If the signal
line voltage has reached 1.5 V or less for at least 2.5
seconds, the ETACS-ECU will set diagnosis code
No.32 as a short circuit. If the ignition switch is turned
off, the ETACS-ECU will stop sending the diagnosis
code.
POSSIBLE CAUSES
• Malfunction of the SRS-ECU
• Malfunction of the ETACS-ECU
• Damaged harness wires and connectors
DIAGNOSTIC PROCEDURE
Step 1. M.U.T.-II/III diagnosis code.
Check that the SRS-ECU sets a diagnosis code.
Q: Is the check result normal?
YES :
Go to Step 2.
NO :
Refer to GROUP 52B
− Troubleshooting
.
Step 2. Connector check: C-12 SRS-ECU
connector and C-227 ETACS-ECU connector
Q: Is the check result normal?
YES :
Go to Step 3.
NO :
Repair the defective connector.
AC310446
Connector: C-12
<LHD>
AX
Harness side
C-12 (Y)
AC310454
Connector: C-12
<RHD>
BB
Harness side
C-12 (Y)
AC310450
Connector: C-227
AG
Junction block
(rear view)
Harness side
<LHD>
28
37
43
29
44
38
23
32
41
24
25
26
27
34
42
36 35
33
21
22
30
39
40
31
AC310461
Harness side
Junction block (rear view)
Connector: C-227
AF
<RHD>
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44